2-[N-(3-Methoxy-2-methylacryloyl)carbamoyl]-2-azabicyclo[2.2.1]hept-5-en-3-one

(+/-)-1-((1α,2β,4α)-2-(acetyloxy)-4-(hydroxymethyl)cyclopentyl)-5-methyl-2,4(1H,3H)-pyrimidinedione

(+/-)-1-((1α,2β,4α)-3-(acetyloxy)-4-((methanesulfonyloxy)methyl)cyclopentyl)-2,4(1H,3H)-pyrimidinedione

(+/-)-1-((1α,2β,4α)-2-(acetyloxy)-4-((triphenylmethoxy)methyl)cyclopentyl)-5-methyl-2,4(1H,3H)-pyrimidinedione

(+/-)-1-(4'β-(tert-Butyldimethylsilyloxy)methylcyclopent-2'-en-1'β-yl)-5-methyl-2,4(1H,3H)-pyrimidinedione